#include <stdio.h>
#define SIZE 5

void show_array(const double arr[], int n);
void mult_array(double arr[], int n, double mult);

int main(void) {
    double dip[SIZE] = {20.0, 17.66, 8.2, 15.3, 22.22};
    
    printf("The original dip array:\n");
    show_array(dip, SIZE);
    mult_array(dip, SIZE, 2.5);
    printf("The dip array after calling mult_array():\n");
    show_array(dip, SIZE);

    return 0;
}

void show_array(const double arr[], int n) {
    int i;
    for (i = 0; i < n; i++)
        printf("%8.3f ", arr[i]);
    printf("\n");
}

void mult_array(double arr[], int n, double mult) {
    int i;
    for (i = 0; i < n; i++)
        arr[i] *= mult;
}
